<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="jquery-3.4.1.js"></script>
</head>
<body>
<div id="contentDiv" ></div>
<div id="deleteResult" ></div>
<input type="button" value="提交数据" onclick="getData()" /> <br/>
<input type="button" value="删除数据" onclick="deleteData()" /> <br/>
<script>
    function deleteData() {
        $.ajax({
            url: "http://localhost:8080/book/99",
            type: "delete",
            success: function (msg) {
                $("#deleteResult").html(msg);
            }
        })
    }
        function getData() {
            $.ajax({
                url:"http://localhost:8080/book",
                type:"post",
                data:{name:"三国演义"},
                success:function (msg) {
                    $("#contentDiv").html(msg);
                }
            })
    }

</script>
</body>
</html>